Fountain-pen.



G. S. PARKER. FOUNTAIN PEN.' APPLIoATIoN FILED JUNE 1e, '1910.

To all whom 'it may concer/n.: y

GEORGE S. PARKER, OF JANESYVILLE, vIXISCONSIN.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Apr. 25, 1911.

Application led .Tune 16, 1910. Serial No. 567,240.

13e it known that I, GEonGE'S. PARKER, a citlzen of the United States, and a resident 4 of Janesville, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Fountain- Pens, of which the following is a specification.

This invention relates to fountain pens and more particularly to feeders of the type provided with'a curved inner end and illustrated in Patents Nos. 512,319, January 9, 1894, 806,231, June 28, 1898, and 778,997, J anual? 3, 1905, heretofore granted me.

"My eederis designed to effect the withdrawal of the ink from the .feeder and nozzle of thejpen when the latter is inverted and returned'to the pocket, and to do this without interference with the effective feed of the ink to the pen point and nozzle when the pen is in use.

Itis well known that after the ordinary fountain cnis inverted and laced in the users poc et, the feed channe being small holds the ink in'suspension by ca illary action, and if there is sufficient di erence between the temperature vof the pen when it is returned to thepocket and the tem erature of the wearers body, the heat from t e body rao v was drawn out ofthe feed channel andy into the reservoir by capillary attraction, this action occurring ,as soon as the pen was placed in the pocket. This to a considerable extent met the difliculty above referred to, but it was found in practice that owing to the slight difference between the bore of the 'reservoir and lthat of the nozzle, the curve or `bend in the end of the feeder was necessarily small and the distance between the feeder and the reservoir wall at this point was .necessarily slight so that the ink would sometimes gather between the feeder and the reservoir wall adiacentthe bend and between the mouth of the feeder or the portion of it coming into contact with the inner surface of the reservoir and the part of the feeder entering the inner end of the nozzle. This prevented ink from being completely returned to the reservoir.

The object of my present invention is to improve upon the construction just described by preventing athering of ink at the point stated and in t is way causing the ink to be positively, immediately and completely returned to the reservoir whenV the pen is placed in the pocket. 'Ihis result is accomplished by tapering the inner end of the feeder and providing it with a bend or turn. This increases the space between the under side of the bend and the wall of the reservoir and reduces the cross section of the inner end of the feeder and the area of its contacting face as "compared with the body of the feeder. This prevents ink from being held by capillary action at and adjacent to the bend. It will be understood that my purpose may be in part effected by removing' or omitting a portion of the material of the feeder adjacent the bendwithout tapering theV inner end.

Lengthwise of the feeder in the face thereof on the side opposite the bend, a feed channel extends from the tapered end to the pen point. Extending com letely across the diameter of the tapere end in the face thereof is a cut or aperture, and the feed channel and this cut are connected yby a slanting capillary-groove, the whole forming a continuous passage from the pen point to the side of the reservoir.

Referring to the accom anying drawings: Figurel is a longitudina sectional view of a fountain pen. provided with my improved feeder. Fig. 2 is a plan view of the channeled side of the feeder. Fig; 3 vis an enlarged fragmentary vertical section of the feeder in its place 1n the barrel, the outlines of my prior construction of feeder being shown in dotted lines.

Referring to the drawings by numerals, 1 indicates a fountain pen of conventional design provided with my improved feeder. This feeder consists of a bar havingl its body 2 preferably cylindrical to t within the nozzle section of the pen and having its forward end 3 cut to fit within the concave portion of the pen point. In the drawing I have Ishown this forward end provided with serrated sides to form ink cups but this forms no part of the present invention. ,The body 2 of the feeder adjacent it-s rear end is tapered andfterminates in a bend 4, the endface of which contains the mouth or end of the feed channel; both said end and mout-h being substantially in contact with the side wallof the reservoir. This tapered portion of the feeder is of relatively small cross section compared with that of the body 2. The result of this construction is that there is more room at the under side of the bend 4 between it and the side of the reservoir and that the area of the contacting face of the bend is smaller than in my former constructions. The taper or slant may be greater at the under side of the feeder than else- Where.

The .feeder I in which 'the ink is fed tothe under side of the pen, although I do not limit myself'tol this form. Extending lengthwise in the face of the feeder on the side opposite to the bend is the feed channel 5 which has its mouth at the contactingvfaceof the bend 4 and leads therefrom to the nozzle and pen point. The portion of this channelat' the bend I make inclined in order to increase the rapidity and completeness ofthe withdrawal of ink from the channel. I also may make ,this part of the channel smaller than the rest to increase capillary action and extend it completely across the diameter of the.

have illustrated is ofthe typev channel is substantially in contact with the side of the reservoir. 2. In a fountain pen, a feeder extending Within the reservoir, provided with a feed vunder side of the bend being removed.

4. In a fountain pen, a feeder extending into the reservoir and terminating in a bend the end face of whichis substantially in contact with the wall of said reservoir, said feeder being provided with a feed channel in theface opposite the bend having its open mouth facing and substantially in contact with the side of the reservoir and extendlng from the contacting end face of the bend to" the pen point, a portion.` of the body of the feeder adjacent the bend on the s1de 'of the feeder opposite the feed channel being removed.

5. In a fountain pen, a feeder extending into the reservoir and terminating in a bend the end face of which is substantially in contact with the Wall of said reservoir, said feeder being provided with a feed channel' extending lengthwise along the feeder from the contacting end face of the bend to the pen point and having a slanting portion extending along the bend. y l

Signed by me thisl 13th day of June 1910.

GrlilORGrEf S. PARKER.

Witnesses: l l

vHELEN A. MoRRissEY,

MAME: BORKENHAGEN. 

